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I have only used it with agar for germinating spores. It seemed to speed things up a fair amount. I have not however used it in any of the 'soil' mixes, of cakes. It is something that I have wondered about for a while though. Has anybody tried adding some type of sugar of honey to the substrate? If so, what sere the results, faster growth, or just more contamination?

Hi Nagual. Yes that works good too, but somethimes I don't have any potatoes around or the time to prepare all that stuff. So I just mixed in about 10 grams of dextrose into 1 liter of agar solution and it worked almost as good.

I couldn't find Dextrose poder anywhere (UK). I picked up a box of glucose and under ingredients it said:
Dextrose monohydrate
I'm not a chemist or anything so I don't know what/if any difference there is but it worked fine in my agar plates.

hey nagual i have heard of an agar made utilising potatoes, agar powder and some other stuff, i only rememer it vaguely tho. could you please do me a favour and post the "recipe" for a potato broth agar?

NAGUAL=NEWBIE
Ive always had alot of interest in biology and science in general but I have no experience
with the magic mushroom, I dont know squat about agar. Here's the recipie from the
grow/find section:========D
PDA - Wash, peel, or un-peeled, and dice the potatoes (200 g). Place in a pot and add 100
ml of distilled water. Boil until potatoes are soft enough to be eaten but not over cooked.
Strain the decoction through cheesecloth (or a thin layer of cotton) in the funnel: collect the
liquid in a graduated cylinder and/or Erlenmeyer flask. Restore the volume of decoction to
1000 ml by adding fresh distilled water and put back in the pot. Set aside potatoes. Add
dextrose (20 g) and agar (18 g) powders to the pot. Heat to boiling while stirring occasionally
until the agar is completely dissolved. Transfer the medium into a 10-ml test tube and/or into
250 ml Erlenmeyer flask and plug with cotton. Cover loosely again with aluminum foil.

o0O)}>there is no real death, life is a dream and we are the imagination of ourselves<{(O0o

I looked at the healthfood store today and they were out of it. I am wondering if there are any good substitutes for dextrose, and if so then why wouldnt it be just as good to use them instead? Is there anything particularly special about dextrose?
That would be cool if you sent me some. Though I am eager to get this project started with or without dextrose. What I was planning on is just using whole grain and and adding some dextrose and some trace minerals, because I have heard that it might help increase potency a little.
I have had the spore syringes for over a week now and I just want to get it all started you know.
I will try and let you know by tomorrow about sending me some. I am going to check one more place that I think might sell it.
Thanks Stu2